Code Review Checklist

WIP. An initial draft based on a new team member's emerging understanding.

We delegate several checks to continuous integration tools:

• test: unit testing
• lint: style, type annotation checking

But some aspects of house style are not automated:

• Object Capability Discipline - minimizing, if not eliminating, ambient authority (#2160)
• release notes; each package may use one of two styles:
  • CHANGELOG.md is auto-generated from conventional commits
  • NEWS.md is manual
• care with interleaving points: "The hazard is that, when both writing and reading a program, especially when reading other people's programs, an explicit await is not salient enough for people to understand that there's a turn boundary there, and that arbitrary turns interleave at that point, invalidating stateful assumptions." -- erights Apr 2020
• use unknown rather than any in type declarations (or document justification for any)

See also: code-style issue label.

todo:

• get review by @erights and @warner (per 11 Feb discussion)
• CONTRIBUTING.md : move to or cite from
• github PR template : move / copy to or cite from